Research Article

Long Term Solar Radiation Forecast Using Computational Intelligence Methods

Figure 7

Sixty-step ahead prediction for one day of solar radiation using five different methods: a linear AR model, two distinct artificial neural networks models (ANN and ANN-WD), and two support vector regression models with different kernel functions (SVR-LK and SVR-GK). The vertical axis units are W/m2 and horizontal axis is the time expressed in minutes.